Yes, support for Oracle VSM6 Tape Drives is available in VM:Backup r3.6 PTF RO96697.

Additional Information:

This enhancement adds support to VM:Backup for Oracle/STK VSM6 model tape drives. Oracle/STK VSM6 model tape drives operate with VM:Backup as "IBM 3490E" tape drives. Therefore you should use the MEDIA and DENSITY information found in the "IBM 3490E, Oracle StorageTek 4490 and 9490 Drives" section under "Managing Tape and DASD Resources" in the VM:Backup System Programmers Reference.